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CBT TEST

CHM 204 CBT PRACTICE

Phil

June 21, 2024

Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace CHM 204 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions

Do not waste time on a question you don’t know

Move as fast as possible and starting with questions that don’t have calculation first to save time

Always crosscheck

Don’t be in a hurry to submit, you are not in a competition

Don’t be scared. Getting an A is easy

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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Created on June 21, 2024 By

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CHM 204

1 / 40

1. The boiling point of tertiary butanol is 65degreeC whereas that of normal butanol is 88degreeC, the difference in there b.p is due to ___

A. isomerism

B. hydrogen bonding

C. resonance

D. nucleophilicity

2 / 40

2. Beside peptide bond,what other covalent bonds are commonly found in peptides ?

A. hndrophobic bond

B. ether bond

C. hydrogen bond

D. disulfide bond

3 / 40

3. There are ---------- resonance structures of benzene

A. 2

B. 4

C. 5

D. 3

4 / 40

4. In a neutral solution,most amino acids exist as ?___

A. negatively charged compounds

B. zwitterions

C. hydrophobic moleculesq

D. positively charged compounds

5 / 40

Ar-OH stands for ------- functional group

A. Aldehyde

B. Phenol

C. Ketone

D. Ester

6 / 40

6. Another name for methyl benzene is __________

A. Toluene

B. Phenol

C. Xylene

D. Naphthalene

7 / 40

7. Which of the following statements is incorrect?

A. Alcohol can be prepared from the reduction of esters

B. Alcohol can be prepared by addition of water to double bonds

C. Aliphatic alcohols are less acidic than phenols

D. Methanol is also called wood alcohol

8 / 40

RCHO stands for ----- functional group.

A. Ketone

B. Alcohol

C. Ester

D. Aldehyde

9 / 40

9. A natural source of phenol is _____

A. fermentation of plants

B. high temperature distillation

C. coal tar

D. vegetable oils

10 / 40

10.

CH3COCH3 stands for ------

A. Ketone

B. Acid

C. Ester

D. Aldehyde

11 / 40

11. Which of the following will be most acidic?

A. CH2.CH2.CH2.COOH

B. CH3.OH

C. CH3.CH2.C.Cl2.COOH

D. CH3.CH.CH2.COOH

12 / 40

12. Sulphonation of benzene yields ___________

A. Para sulphur benzene

B. Auto sulphur benzene

C. Sulphric acid

D. Sulphonic acid

13 / 40

13.

A benzenoid hydrocarbon in which two benzene rings are fused together at the ortho position is called ____________

A. Anthracene

B. Biphenyl

C. Naphthalene

D. Phenanthrene

14 / 40

14.

The parent compound of polynuclear hydrocarbons is ___________

A. Naphthalene

B. Phenatrene

C. Biphenyl

D. Anthracene

15 / 40

15.

) [CH3Co]20 is ______

A. An ether

B. An amide

C. Dicarboxylic acid

D. An anhydride

16 / 40

16. Which pair of reactants below will react to produce an acetal ?

A. primary aldehyde + ketone

B. alcohol + aldehydes

C. ketone + alcohol

D. acid + acetone

17 / 40

17. The reaction of benzene with propanoyl chloride in the presence of Aluminum chloride will yeild _____

A. Phenyl methyl ketone

B. Acetophenone

C. Phenyl acetone

D. Phenyl propyl ketone

18 / 40

18. Starch is also called the following except ____

A. Amylum

B. Pectin

C. Amylose

D. Polymer

19 / 40

19. An equilibrium mixture of ethanol and water boils at?

A. 90 degree C

B. 78 and 100) degree C

C. 68 degree C

D. 68 and 98) degree C

20 / 40

20.

The presence of an aromatic ring in a compound is detected by ____________

A. Chromatography

B. Ultraviolet spectroscopy

C. Infrared spectroscopy

D. Mass spectroscopy

21 / 40

21.

Hydrogenation of benzene at higher temperature and under pressure yields ________

A. Cyclohexane

B. Benzaldehyde

C. Cyclohexene

D. Cyclohexyne

22 / 40

22. Iodoform is easily recognized by?

A. It’s ether smell and blue colour

B. it’s ammonia smell and green colour

C. it’s medicinal smell and yellow colour

D. it’s urine smell

23 / 40

23.

HCHO is an organic compound popularly known as ------

A. Formaldehyde

B. Methanoic acid

C. Ethanal

D. Formic acid

24 / 40

24. In order to produce a primary amide,an acid chloride should be treated with ___

A. A primary amine

B. An alcohol

C. Ammonia

D. A secondary amine

25 / 40

25. Which general class of compounds does amine belong?

A. Nitrile

B. Propanol amine

C. Nitro amine

D. Acetamide

26 / 40

26.

The substitution of an acyl group into an aromatic ring by the reaction with an acid chloride in the presence of Lewis acid is called ____________

A. Hyperconjugation

B. Friedel - Craft akylation

C. Friedel - Craft acylation

D. Hydrogenation

27 / 40

27.

Diethylether is correctly represented by the formula

A. CH3CH2OCH2CH3

B. CH3CH2CH3CH2

C. CH3OCH2CH3

D. CH3OCH3

28 / 40

28. Which of these functional group Is not found in the structure of urea ?

A. Thiol

B. Hydroxyl

C. Carbon2I

D. Amide

29 / 40

29.

Ethane is sp3 hybridized molecules and has ---- bond angle

A. 120.5degrees

B. 45.5 degrees

C. 190.5 degrees

D. 90.5 degrees

30 / 40

30. Ketones are less susceptible to nucleophilic attack than aldehydes because ____?

A. Ketones are less stable than aldehydes

B. The steric hinderance of the alkyl group of ketones may affect their reactivity

C. ketones are more reactive

D. Aldehydes are more stable than ketones

31 / 40

31.

In the hybrids orbitals, as the s character increase, bond length -------

A. Decrease

B. Increase

C. Stabilize

D. Weakens

32 / 40

32. The following will turn blue black with iodine except ____

A. Groundnut

B. Pupuru

C. Garri

D. Guinea corn

33 / 40

33. A positive test to Benedict’s reagent is indicated by ___

A. Brown to blue

B. Brick-red to brown

C. Brick-red to blue

D. Blue to brick-red

34 / 40

34. Which of the following is the formula for Hydroxylamine ?

A. CH2.OH

B. C6.H5.NH-OH

C. CH3.NH2.OH

D. H2.N.OH

35 / 40

35. Bleaching powder provides chlorine which oxidizes ethanol to _________.

A. Ethene

B. Ethane

C. Ethanal

D. Ethyne

36 / 40

36.

The benzenoid hydrocarbons in which two or more benzene rings are fused together at ortho position in such a way that each pair of rings shares rings shares two carbons are called ---------- benzenoid hydrocarbon.

A. None of the options

B. All the options

C. Condensed

D. Isolated

37 / 40

37.

The cannonical forms of benzene were proposed by _____________

A. Kekule and Dalton

B. Kekule and Dewar

C. None of the options

D. Dalton and Dewar

38 / 40

38. The method of reduction of the carbonyl group of ketone produced by Friedel -crafts acylation is ------------ reduction.

A. Alkylation

B. Clemenson

C. Electrophilic

D. Acylation

39 / 40

39. The following terms can be used to describe cellulose except ____

A. Bioenzyme

B. Biomass

C. Polymer

D. Polysaccharide

40 / 40

40. Denaturation involves the loss of what type of structure?

A. Secondary and Tertiary

B. Tertiary

C. Secondary

D. Primary

Your score is

The average score is 38%

CHM 204 CBT PRACTICE

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